I'm curious about the genetics behind the Cream Legbar and other autosexing pure breds. I'm also curious as to why there are none (to my knowledge) currently in the USA, and why they have neither been developed nor imported here. With the immense popularity of the sex-link cross breds, seems like these would be desirable (IE; profitable) breeds for hatcheries and fanciers to have. Anyone know how one might go about developing an autosexing bird that breeds true? Rumor has it the Legbar is of Leghorn, Barred Rock and Aracauna heritage. What's going on in those DNA strands that makes it work?